| 摘要 |
A silencer includes an inner cylinder that is connected to an exhaust pipe and a partition cylinder that is accommodated in a housing and that sections an expansion chamber in the housing. A group of partition-cylinder small holes is formed in the partition cylinder, and a group of inner-cylinder small holes is formed in the inner cylinder. The group of partition-cylinder small holes and the group of inner-cylinder small holes do not overlap each other in an axial direction, and are separated from each other by a predetermined distance in the axial direction. |
